Surface-modified adsorbent comprising metal oxide/hydroxide particles reacted with one or more perfluorinated organic acids
US4983566A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1988 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | Oct 31, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S530/812
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An active material and method of making same are disclosed comprising a metal oxide/hydroxide surface having chemically bonded to reactive sites thereon, a layer of a perfluorinated organic material formed by reacting with the metal oxide/hydroxide a perfluorinated organic acid comprised of an acid group and a perfluorinated carbon-containing group. The bond to the metal oxide/hydroxide surface is formed by reaction of the acid group with the metal oxide/hydroxide surface, so that the perfluorinated carbon-containing group is oriented away from the metal oxide/hydroxide surface. The perfluorinated organic acid may be a perfluorinated phosphonic acid, a perfluorinated phosphinic acid, a perfluorinated carboxylic acid, or a mixture of two or more of the acids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.